Trestle.



l R. J. KOCH.

TRESTLE. APPLIGATION FILED DBO. a1. 190s.

' 934,736, 'Patented sept. l21, 1909. 2 SHEETS-SHEET 1.

ATTOHNE V8 R. J. KOGH. TRESTLE. APPLIOATION FILED DBO. a1, 190s.

934,736. Patented sept. 21, 1909. 2 SHEETS-SHEET 2.

- JZ i -f W/Tf/ESSES A TTOHN E V8 of eaeli pair piveled er hinged tefrelier ille To all whom it may concern;

'Be it known that l., lieiniiin el'. QQH, e. citizen ef llie United Sintes, and '.i resident of the eiliy ef lilew York, bereegl Mezilnli'zin, in the eoinily :mii Stine New York, have invented i new enel Improved l`restle, el' which ltlie follmif'iiig is full, clear, :mil exact deserilitiee.

llie invention in irnprovenienl; in Illes elf i1 folding er lnioelr-lewn type for general use where such :in elevated suppe "t is required, amil lies iii vie J :i frees, e preferably iii the mein eenslneiefl ef slieei' inelel. previgling n, rel:il1i,'ely sieig seynetnre which, when ilisesseinblefl may be piielged wiliin ai splice ,appie zicely met linger than elle restle begun.

le ellis engl the inveilitien nr I be dennen es consisting el? i elniniiel tres i beemyeid legs adapted ie be ei-ller rleiielmbj eerii. eleiil te the beam er fel; ed therein, the. 0s preferably errengel in pairs, with the w le swing glpziifi in plaine @reefs-'irme of lievi] when ille legs fire im e tl :ewiili. Suitable (leiehel/Jle presided between lie neem wel plie L11-esile .is assembled, zing". in ee l i ille li'estle seem en eiixilisy Cie-.im serving either i im eiljiisl'elile ineliijiefl ene per@ er es :Li ees/ei' i' j ille lees ire :efelclecl therein.

Beleg-ence is te ee limi te ille :.ieeemg iiig; drawings forming e. puri e eei'ieii. in .rliieli, signaler @finir erenee iniiliene eerrespeni' i l'lie Views.

pugni A when zi l is n persyee'ive View ef :i ire-selle,

iiiliieil, eensliriieiegl iii :ieei'irflanee rvi'lrniy ini'eiliion; Fig. is :i eenriil rerlengitucllneil seelieii li'reugze the slime;

en eil' il; e

3 is i Central emes-see eedllig. fl is en inverted glieli el treslle neem Willi llie legs iilelnclieil lhei from :ind folded ilierein, and sliewiiig inriliery begin in pei-spedire prepariitery l'i plneing il. over the tresile beam as :i Sever.

'l'lie invention 'more speeiczilly descrilief 'enilmgjlies inils'rmislmotion u channel iesle beam 5, willi the siile flanges liereof, when tlie lresile' is assembled, projeeing dew wzirilly and pressed inwririlly mi Opposie sides neer each enil lo lei-1n pee-liefs erre (fesses l. Legs 7 arranged in pe' "s, also si" eliennel construction, have the laii'iges filierer ,le beam Wlieir lll Sepe.. 235i, QQ.

serial No. 79,1555

iiiwerdly and extended :1 sub- Ll 'sienee below l'lie iop of the legs iii-s 8,'il1e ears of ezicli pair of legs e" z i zig. mill connected. together by a unige er 'ei-piu 9. The ears of 011e leg,r

te pe'riiit oi' the pivot/pin sliding; laterally lnereni. The legs ef eeeii pair above their p1 etal eeiigieeiieii lieve upwerdljy@rejectingy lengnes ll. stamped from their side faces to engege ever ill@ legiges of the trestle beam elle eeeli een illy. in engaging the legs with t e is neeessery te close the legs of e.y e'ili ille legs `wellpressed together ai; ef pivotal; connection, to carry alie A epi-zi le ,figlie einer ends of the slots l). reeseli ef bilis sliding pivotal eenneezieri iieweeu figlie legs ef euch 'pair the leezeni .perieiis tlieeef iney be spread 'lie upper ends ei lie legs in`eontact, as is liest observer., iii ig. For holding lthe les/er perleris @lie legs (ifieaeh pair Llis- 'e'ideal when' legs ere applied to the liesiii, aire lieelgs l2 arranged below the pivots and pimielly snppered at 011e end en pins i3 ezilenfliig leeuwen die flanges eff ene leg emi engaging Wiri Similar pins 13 extending; betr-leen ilie (if elle eppesite lee; miele lmifiii 37yes 13 epposile ends :it i. 1^ ef @ie ef the legs. The i ef; li-e guter ef the leigs are e "e n by lreees li :unl at the e e es of the legs by erase being in ehe nature of ieee lieving the niermediate n, or bei* pertien liereei ggiweelly eeiigieeted to the under side ei" eheresile beem 5, and the ex treniiies inweiiilgsiiriierl te pass into the eyes E3B. These uyimedly-turned er oiset extremities (if the braces normally stand were i lesser disieiiee han die distance be! weegi the whereby it isv necessary to spring tile wires (if @he loops eparl; in effect` iii-e me meel, iwi @seemingly 1811- lering the e ,gemeintseeiire. The pivotal art, with lie enguesll engaged and With aire sleecl as indicated at 10 2. The combination of a channelI beam,

`connection of the upper ends of the braces 15 is made at or near the center of the trestle legs to support the beam, detachably conbeam, and the braces 14 are connected to the nected to and foldable within the beam, and outer ends of the beam. braces connected to and foldable within the 5 In addition to the braces 14 and 'l5 debeam anddetachably connected to the legs. 7o` tachably connecting each pair of legs to the 3. VThe combination of a trestle beam havbeam the upper portions of the legs are coning downwardly-projecting flanges, legs to nected by braces 16, also of wire or bar consupport the beam, arranged in pairs, with struction and pivotally supported at lthe the legs of each pair ivoted together and trestle beam adjacent to the races 14. The passing between the anges of the beam, 75

` ,braces 16 are also inwardly turned at the exeach leg having a tongue odset therefrom tremities and extend inwardly of the trestle to engage over the outside of one of the beam and enga e in openings in the upper flanges.

portions of the egs, as shown in Figs. 2 and 4. lThe combination of a channel` trestle 3. Byl this construction, any strain von the beam, and legs to support the beam, with 80 trestle tending to spread the pairs of legsl the legs arranged in pairs, each leg of each apart will be resisted by the braces 15 and pair having a tongue stamped therefrom to 16, and a'strain tending to force the pairs receive and engage with'the iianges of the I of legs together will beresisted by the braces beam. f

20 1441116 by the trestle beam 5, in View 0f the. 5. The combination of a channel trestle 85 downward and outward inclination of the beam, and legs to support the beam arle s. 'ranged in pairs, with the legs of each pair n connection with the trestle, I provlde having a sliding pivotal connection and proan auxiliary beam 17 ,p also of channel'convided with means to embrace the anges of struction, with the flanges thereof at one end the beam at each side. 90

extended EOPIOVG ears lsewhch are PIV` 6. The combination of a channel trestle otally connected to the trestle beam 5' either beam, and legs to support the' beam, arat one end or an intermediate point by a ranged in pairs, with the legs of each pair removable' pin 19. The flanges ofthe aun` pivoted together to swin 'apart in a p ane iliary beam have apertures at points of their crqsswise of the beam, ang wlth the legs pro- 95 len h in which a removable pin 20 may be vided with tongues offset therefrom and eninserted toconnect asupporting-bar 21, the aging on the outside of the flanges .of the latter being adapted to passthrough any onev eams. of a number of slots 22 formed in the top of 7 The combination of legsl arranged in v the trestle beam 5 and having openings 2 3 pairs, with the legs of `each pair pivoted to- 100 at points of its length through which a pin' `gather to swing apart, and each leg provided or ey 24 may be inserted to retain the auX- with an Aoffset tongue, and a channel beam iliary beam at any desired inclination. This seating on the tops of the legs, with the e attachment is' especially useful for architects 'flanges thereof passing between the outer A40 and draftsmen in'the supporting ofa draw` faces of the legs and tongues. l 105 ing board, as well as in other relations where' 8. The .combination of legs arranged in an inclined support is required. When the pairs, with-the legs of each `pairpivoted to' legs are detached from the trestle beam the gether to swing apart at the bottom, each braces 14, 15 and 16 are foldable within the leg having an upwardly-projecting tongue 4 5 ylatter, as is also each pair of legs, as illuspressed therefrom, a channel beam seated 0n 110 trated in Fig. 4. With the. auxiliary beam the tops of the legs, with the iianges thereof ,detached the supporting-bar is foldable passing on thefinside and engaged bysaid therein, and the auxiliary beam serves as a tongues, the pairs of legs inclining down- .cover for 'the trestle beam, inclosing the legs, wardly and outwardly, and braces detachbraces, etc. With the auxiliary beam serving ably connecting the legs and beam'to ether 115 in this capacity it may be connected through arranged on both sides of each pair o legs. the ears 18 by the pivot-pin 1 9 at the oppo` 9. The combination of a trestle beam, legs site side of, the trestle beam, thus a''ording to support the beam arranged in pairs, with 'a cover. with a hinged connection. It is thus the legs of each pair 'pivoted together -to 'seen that-A the entire apparatus may be swing apart in a plane crosswise of the 120 packed up within a compass notsubstanbeam, detachable braces connecting the pairs tially larger th'an the trestle beam alone. of legs to the beam arranged on both sides Having thus described my invention, I of the legs of each pair, and links arranged `claim as new and desire to secure by Letters longitudinally of the beam and connecting yn0 Patent: the beam with the upper end portions of 125 1`. The combination of a channel trestle the respective pairs of legs. beam, and legs toV support the beam, ar- 10.l The combination of a channel trestle ranged in pairs, with the legs of each pair beam, legs to snpportthe beam, detachably pivoted together and detachably connected to connected `to and foldable within the chan 55 and foldable within the beam.

nel beam,v nd'an auxiliary beam serving as 139 a cover for the open side of the trestle beam and having, means to support it in an inclined position over the trestle beam.

ll. The combination of a channel trestle beam, legs' to support the beam, detachably connected to and foldable Within the beam, an auxiliary beam to cover the under side of the trestlebeam and having means to detachably connect and pivotally support it at the opposite side of the ltrestle beam to provide an inclined support.

12. The combination of a channel trestle beam, legs to support the beam foldable therein, and an auxiliary channel beam adapted to fit over the under side of the trestle beam and eonne the legs therein and having means to support it at varying inclinations at theopposite and upper side of the trestle beam to provide an inclined sup- I port.

13. The combination of a trestle beam, legs to support the beam, arranged in pairs, and a brace arranged between the beam and each pair of legs, 5 tively movable to and from each other into and out of engagement- With the legs.

14. The combination of a channel trestle beam, legs to support the beam, arranged in pairs, with the legs of each pair pivoted together to swing to and -from each other in a plane crosswise of the beam, braces arranged at each side of each pair of legs, pivotally supported on the under side of the beam and foldable therein, each brace having means to engage the le s below the pivotal connection thereof, andiraees pivotally connected to the. under side of the beam having means to detachably engage the legs above the pivotal Connection thereof.

having spring arms rela- In testimony whereof I have signed my-40 name to this specification in the presence of two subscribing Witnesses.

RICHARD J. KOCH. lVitnesses XV. lV. Hour, Evnnann B. MARSHALL. 

